Air space expansion joint



y 2%), 1931' c. LEHNING 1,807,339

AIR SPACE EXPANSION JOINT Filed Sept. 1930 2 Sheets-Sheet l May 26, 1931'. c, LE N 1,807,339

AIR SPACE EXPANSION JOINT Filed Septw 30, 1930 2 Sheets-Sheet 2 Patented May 26, 1931 ATES CHARLES LEHNI'NG, F ASTORIA, IIEW YORK AIR SPACE EXPANSION JOINT Application filed September 30, 1930. Serial No. 485,427.

The present invention relates to improve; ments in expansion joints for roofs, walls, etc, of tile, concrete, or brick and it is the principal object of my invention to provide such a joint which will make allowance for an expansion of the pitch filling without in any way lose or impair its usefulness as a joint.

Another object of my invention is the provision of an expansion joint of this character which is comparatively simple and therefore inexpensive in its construction, yet durable and efiicient in operation.

A further object of my invention is the provision of an expansion joint which may be 3 used with equal facility for tile, brick, concrete or other roofing and also for walls.

A still further object of my invention is the provision of an expansion joint for walls and roofing the upper frame of. which is adapted to be filled in its upper part with a filler of pitch or other like material, while its lower part between the feet constitutes an air space.

These and other objects and advantages of my invention will become more fully known as the description thereof proceeds and will then be specifically defined in the appended claims.

In the accompanying drawings forming a material part of this disclosure Fig. 1 is a plan view of an expansion joint for tile and concrete paving constructed ac cording to my invention.

Fig. 2 is a section through the same on line 2-2 of Figure 1.

Fig. 3 is a View similar to Figure 1 of an expansion joint for brick and concrete roofing.

Fig. 4 is a section on line 1-1 of Figure 3.

Fig. 5 is a fragmentary detail view of an expansion oint for concrete roofs illustrating the compression of the expansion joint under the expansion of the roofing material.

Fig. 6 shows a tile roofing equipped with expansion oints according to my invention.

Fig. 7 is a to 3 plan view of a roof ridge.

As shown in igures 1 and 2, the expansion joint constructed according to my invention, preferably to be used with walls, comprises an outer frame 10 preferably made of copper,

and its side parts 11 and 12 are constructed on a slant to withstand the pressure of tile 13 or cement 1 1.

The ends of the joint are preferably outwardly bent, as at 15, and then inwardly bent, as at 16, to form a space 17 for the reception of and holding or anchoring of the outwardly curved bottom plate 18held in place by bolts 19 or the like. Spurs 20 are formed 011 the inner faces of the side parts 11 and 12 of the frame to provide an anchor for the same in the preferably pitch filler 21 in frame 10.

The legs 22, 23, formed inte ral with the side bars 11 and 12 have inwardly and outwardly curved orbent feet 24, 25, respectively to be anchored in the surroundingconcrete or cement or mortar bed 26, while the space 27 between the feet 22, 23, and below bottom plate 18 is an air space;

The feet and rear wall of the expansion joint rest against a copper fastening or lap joint 28 resting at its bottom on a tar or other layer 29 on a concrete roof or floor30.

In Figures 3 and 4 the use of the expansion joint with a brick or concrete roofing 31, 32 is illustrated, and its construction is substantially the same as described also with respect to the illustration in Figures 1 and 2.

In Figure 5 I have shown in dotted lines 33 how the expansion joint yields to the pressure of the cement or tile.

In Figure 6 atiled wall 34 is illustrated in which a plurality of expansion joints 35 is preferably arranged as shown while Figure 7 illustrates the ridge 3 of a roof with the material of the roof 37 spaced as at 38 for the reception of the expansion joints constructed according to my invention.

The operation of my device will be entirely clear from the above description andsimultaneous inspection of the drawings, and it will be clear that the expansion joint will have ample space to allow a compression under the. expansion of the wall or roofing material.

It will be understood that I have shown and described the preferred formof my invention only as one example of the many possible ways to construct the same, andthat I may make such changes in my expansion joint as reqiiired in practical use as come within the scope of the appended claims without departure from the spirit of my invention and the principles involved.

Having thus described my invention what I claim as new and desire to secure by Letters Patent is:

1. An expansion joint for brick, concrete, or tile, roofs and walls comprising a copper frame adapted to be soldered to the copper fiashings, outwardly slanting side walls, a curved bottoin wall forming: with said side walls a space adapted to be filled with pitch, outwardly slanting legs for said frame for enclosing an air space beneath said pitch filler, and anchoring feet formed with said legs.

2. An expansion joint of the class described comprising a copper frame slanting side walls formed therewith having outwardly bent lower ends bent upon themselves in spaced relation, a curved bottom having its ends held in the spaces between the bent ends and bolts securing said bottom ends to said side walls, legs formed integrally with said side walls, and anchoring feet on said legs.

3. In an expansion joint of the class described, a frame, slanting side walls and a curved bottom attached to the lower bent ends of the side walls to form therewith a space for a pitch filler outwardly slanting legs formed integrally with said side walls to form with said bottom an air space, and out wardly and inwardly curved feet at the lower ends of said legs to provide means for anchoring said joint in the material of a roof and wall.

Signed at New York, in the county of New York, and State of New York, this 29th day of September, A. D. 1930.

CHARLES LEHNING. 

